Before RH, I was able to run Let's go island fullscreen with just teknoparrot, so it's strange that now RH did some kind of mess and now I require some additional software, but I'll try DXwnd and I'll let you know, hope it doesn't hurt frame rate like RH does, it could be the best solution right now.
But first I must restore teknoparrot fucntionalities with these two games.
As for calibrations, is there a video guide to make it for Let's go island? I tried basically everything, even your files (thaks again ) but nothing worked, only RH was able to adjust mouse calibration, but like I said RH performance issue even if minor are annoying especially since teknoparrot works flawlessly.
I have a I5 7600k with intel hd630
Sorry for the multipost ^^